Attribute Processor - Debugging Request Header

[yaohongkok]

I am trying to debug a problem associated with the attribute processor and I am not sure how I can print out (or log) all the request header (associated with my /v1/logs request).

I am trying to extract headers from my request using attribute processor. It works locally but not when everything is connected in AWS. So, I am hoping to view all the request headers. Anyone knows how I can do this?